SABRE Wireless Home Security Door Window Burglar Alarm with LOUD 120 dB Siren - DIY EASY to Install ATTENTION-GRABBING  extremely loud 120 dB alarm helps wake/alert homeowner or renter, helps deter intruder and possibly notifies neighbors (audible up to 750 feet/230M away) USER-FRIENDLY  3 adjustable settings (off/alarm/chime); chime mode is ideal to alert you when children or guests are coming and going when you are at home ATTRACTIVE & CONSUMER-PREFERRED  superior to other home security products, this premium white alarm looks great inside your home EASY INSTALLATION  no wiring needed, plus sensor mounts on either side of alarm for easier set up; 4xLR44 batteries included EXTRA LEVEL OF SECURITY  provides battery status update with a low battery test button